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Feature

Set includes 1 pir motion sensor unit and 1 receiver/alarm unit
Add additional sensors: up to 50 sensors can be linked to the receiver (skqh652qkp3)
4 alert settings: loud alarm, loud chime, soft chime, lights only, charcoal grey body, blue LED motion indicator
Communication range of up to 390 feet between motion sensor and alarm unit. Senses motion over a 45 degree arc, up to 26 feet away, motion sensor unit can be used outdoors
Low battery indicator. Batteries are not included, optional power supply for the alarm unit (skqh652chg)